A good tune and a little more boost are supposed to make those some really good running cars. Don't have to put much in to get a lot out of them just for a little more fun. I think it was something like around 300hp from just a tune, up from the stock 260hp. And it's not a heavy car either.
If it was me, I would try and find a 4 door Turbo SS. Total sleeper since I don't think anyone would be expecting it.